<block name="header">
  <!-- 导航条  -->
  <div class="header-page">
    <div class="container container-md">
      <div class="logo">
        <a href="{:U('/')}"><img src="{:get_cover(C('LOGO'),'path')}" alt="{:C('WEB_SITE_TITLE')}" height="40"></a>
      </div>
    </div>
  </div>
</block>